Crash dieting doesn’t reduce your waistline alone; it significantly reduces your life expectancy too.

Researchers at Glasgow University observed that fish given a “binge then diet” food regime had a reduced lifespan of up to 25%.

Their study compared the growth rate, success of reproduction and lifespan of stickleback fish. They believe the findings could have implications for teenagers and children who follow extreme patterns of dieting. This is because they are still growing.